John I de Balliol
He was born before 1208 to Hugh de Balliol, Lord of Balliol and of Barnard Castle and Gainford (c. 1177–February 2, 1229) and Cecily de Fontaines, daughter of Aleure, lord of Fontaines and Longpré-les-Corps-Saints.
In 1223, Lord John married Dervorguilla of Galloway, the daughter of Alan, Lord of Galloway and Margaret of Huntingdon. By the mid-thirteenth century, he and his wife had become very wealthy, principally as a result of inheritances from Dervorguilla's family. This wealth allowed Balliol to play a prominent public role, and, on Henry III's instruction, he served as joint protector of the young king of Scots, Alexander III. He was one of Henry III's leading counsellors between 1258 and 1265. and was appointed Sheriff of Nottinghamshire and Derbyshire from 1261 to 1262. He was captured at the Battle of Lewes in 1264 but escaped and rejoined King Henry. In 1265 Thomas de Musgrave owed him a debt of 123 marks. About 1266 Baldwin Wake owed him a debt of 100 marks and more.
Following a dispute with the Bishop of Durham, he agreed to provide funds for scholars studying at Oxford. Support for a house of students began in around 1263; further endowments after his death, supervised by Dervorguilla, resulted in the establishment of Balliol College.
John and Dervorguilla had issue:
- Sir Hugh de Balliol, who died without issue before 10 April 1271. He married Agnes de Valence, daughter of William de Valence, 1st Earl of Pembroke.
- Alan de Balliol, who died before 10 April 1271 without issue.
- Sir Alexander de Balliol, who died without issue before 13 November 1278. He married Eleanor de Genoure.
- King John I of Scotland, successful competitor for the Crown in 1292.
- Margaret de Balliol, who might have married Thomas de Moulton.
- Cecily de Balliol (d. before 1273), who married Sir John de Burgh (d. before 3 March 1280) of Wakerley, Northamptonshire, by whom she had three daughters, Devorguille de Burgh (c.1256 – 1284), who in 1259 married Robert FitzWalter, 1st Baron FitzWalter; Hawise de Burgh (d. before 24 March 1299), who married Sir Robert de Grelle (or Grelley) (d. 15 February 1282) of Manchester; and Margery de Burgh, who became a nun.
- Ada de Balliol, who married in 1266, William Lindsay, of Lambarton, and had a daughter, Christian de Lindsay.
- Eleanor de Balliol, who married John II Comyn, Lord of Badenoch, and had a son, John 'The Red Comyn, Lord of Badenoch (d. 1306).
- Maud (or Matilda) de Balliol, married to Bryan FitzAlan, Lord FitzAlan, and feudal Baron of Bedale. They were parents to Agnes FitzAlan (b. 1298), who married Sir Gilbert Stapleton, Knt., of Bedale  (1291-1324). Gilbert is better known for his participation in the assassination of Piers Gaveston, Earl of Cornwall.
- SCOTTISH ROYAL LINEAGE - THE HOUSE OF ATHOLL Part 2 of 6 Burkes Peerage. Retrieved 2007-11-01
- Richardson II 2011, pp. 206-8, 577-8.
- Cokayne 1926, p. 474.
- Norcliffe of Langton, M.A., Charles Best, editor, The Visitation of Yorkshire, 1563-64 by William Flower, Norroy King of Arms, London, 1881, p. 294 and footnotes
- Cokayne, George Edward (1926). The Complete Peerage, edited by Vicary Gibbs and H.A. Doubleday V. London: St. Catherine Press.
- Richardson, Douglas (2011). Magna Carta Ancestry: A Study in Colonial and Medieval Families, ed. Kimball G. Everingham II (2nd ed.). Salt Lake City. ISBN 1449966381
- Beam, Amanda (2008). The Balliol Dynasty, 1210-1364. Edinburgh: John Donald.
- Oxford Dictionary of National Biography
- Magna Charta Sureties 1215, Frederick Lewis Weis; pages 44–1, 141-2
- Balliol College
- Founders of Balliol College and their Families, Balliol College Archives & Manuscripts, University of Oxford
- History of the Baliol Family in Scotland
|Lord of Balliol||Succeeded by